def change_cart_select(request): # 点击某个购物车选中状态
cartid = request.GET.get("cartid")
cart = Cart.objects.get(pk=cartid) # 根据购物车主键查询购物车
cart.ischoose = not cart.ischoose # 选中状态取反
cart.save() # 更新购物车选中状态到数据库
totalPrice = total_price(request) # 计算总价
user_id = request.session.get("user_id")
select_all_flag = not Cart.objects.filter(
user_id=user_id, ischoose=False).exists() # 是否全部选中购物车记录，若购物车全选，则返回True
data = {
"ischoose": cart.ischoose,
"select_all_flag": select_all_flag,
"totalPrice": totalPrice,
}
return JsonResponse(data)
def addShopping(request): # 添加到购物车
goods_id = request.Get.get("c_id") # 接收Ajax请求传送的goods_id参数
data = {
'status': "200",
}
carts = Cart.objects.filter(goods_id=goods_id)
if carts.exists(): # 如果当前用户在购物车中已经放入了该商品
cart = carts.first()
cart.cart_num = cart.cart_num + 1 # 在原来购物车商品数上加一
cart.save() # 更新购物车
else:
cart = Cart.objects.create(goods_id=goods_id, cart_num=1)
totalPrice = total_price(request) # 计算总价
data["totalPrice"] = totalPrice
data["cart_num"] = cart.cart_num
return JsonResponse(data)
def make_order(request): # 创建订单
carts = Cart.objects.filter(user=request.user,
ischoose=True) # 查询登录用户选中的购物车记录
orders = Orders() # 创建订单对象
orders.user = request.user
orders.totalPrice = total_price(request)
orders.save() # 保存订单
for cart in carts:
order_goods = OrderGoods() # 创建订单商品对象
order_goods.orders = orders # 关联订单对象
order_goods.goods = cart.goods # 关联商品
order_goods.goods_num = cart.cart_num # 设置订单商品数量
order_goods.save() # 保存订单商品
cart.delete() # 删除购物车记录
data = {
"status": "200",
"orderid": orders.id,
}
return JsonResponse(data)
def change_select_all(request): # 改变全选状态
is_select = request.GET.get("hope_status") # 接收全选span希望的状态
print("is_select=", is_select)
user_id = request.session.get("user_id")
carts = Cart.objects.filter(user_id=user_id) # 获取当前用户的购物车记录
if is_select == "true":
for cart in carts:
cart.ischoose = True
cart.save()
else:
for cart in carts:
cart.ischoose = False
cart.save()
totalPrice = total_price(request) # 计算总价
data = {
"is_select": is_select,
"totalPrice": totalPrice,
}
return JsonResponse(data)
def subShopping(request):
goods_id = request.GET.get("goods_id") # 接收Ajax请求传送的goods_id参数
data = {
'status': "200",
}
carts = Cart.objects.filter(goods_id=goods_id,
user=request.user) # 查询当前用户放入购物车中的指定商品
if carts.exists(): # 如果当前用户在购物车中已经放入了该商品
cart = carts.first()
cart.cart_num = cart.cart_num - 1
if cart.cart_num == 0: # 如果减1后，当前用户的购物车中该商品数量为0，则删除该购物车记录
data["cart_num"] = 0
cart.delete()
else:
cart.save()
data["cart_num"] = cart.cart_num
totalPrice = total_price(request) # 计算总价
data["totalPrice"] = totalPrice
else: # 购物车中本来就无此商品
data["status"] = "901"
data["msg"] = "购物车中无此商品，不能减！"
return JsonResponse(data)